Mx-3's, Non- Interference, or Interference Engines?
- PatMX3
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Mx-3's, Non- Interference, or Interference Engines?
Im wondering what will happen to my baby, if my timin belt goes.. Will my max3 engine get screw up, and damage the valves?
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Color -Rasberry Metallic. P-START Ignition*.
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#2nd Mx-3 Owner.
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- jschrauwen
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Re: Mx-3's, Non- Interference, or Interference Engines?
I believe all K series engines are "non-interfearance". This may help; http://en.wikipedia.org/wiki/Mazda_K_engine#KLPatMX3 wrote:Im wondering what will happen to my baby, if my timin belt goes.. Will my max3 engine get screw up, and damage the valves?
'92 GS-ZE - sold, '95 GS - sold, '02 Protege LX - Daughter, '00 Audi A4 2.8 QTip, Ducati TT2
90 JDM RHD 300ZX TT - 572.1 RWHP | 590.0 RWTQ | 21 PSI | Pump gas
90 JDM RHD 300ZX TT - 572.1 RWHP | 590.0 RWTQ | 21 PSI | Pump gas
- atlantamx3
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Non-interference. I tend to believe people who have had experience with them and can relate their findings to us. Especially comments like these from Kiwi_MX3:
the "STOCK" K serise motors are non interferance motors
as i check my vavle lift vs total travel when building my motor
and have a easy 0.060 clearance on a stock lift.
“You’ll find, that the only thing you can do easily is be wrong, and that’s hardly worth the effort.”
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NON well why? LOL because when timing belt busts all you do is simply put a new one and retime.. woo a money saver.. isnt it in the faq?
-hec
MX-3 w/ curved neck millenia klde, boosted @ 5 psi. /bov and wastegate are good!/ nitto drag radial/ gutted interior/ millenia red top injectors, vortech fmu/aem wideband/ all bolts ons/ Car put together 100% by me. Mechanic? who needs a mechanic? ew.. real men work on their own cars!
MX-3 w/ curved neck millenia klde, boosted @ 5 psi. /bov and wastegate are good!/ nitto drag radial/ gutted interior/ millenia red top injectors, vortech fmu/aem wideband/ all bolts ons/ Car put together 100% by me. Mechanic? who needs a mechanic? ew.. real men work on their own cars!
- jschrauwen
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I said non-interferance for a reason. Learned first hand in 1990 with my (nearly new at the time) 1990 MPV V6. You'll notice in the wikipedia link that my MPV is also part of that collective group. An extremely cold winter's morning and trying to start an extremely cold engine. Cam belt did not turn with the engine on initial start. Therefore all of the timing was way out of sink. Lots of fuel and lots of spark but not timed close enough anymore to even get any sort of detonation. When I was told be the Mazda techs of what had happened I asked if most of the valves got mashed when I tried and tried to start it over and over again. That's when I learned that it wasn't possible based on it's non-interferance design. I learned the hard way ...... but softly though. Of course the warrranty covered it.
http://en.wikipedia.org/wiki/Non-interference_engine
http://en.wikipedia.org/wiki/Non-interference_engine
'92 GS-ZE - sold, '95 GS - sold, '02 Protege LX - Daughter, '00 Audi A4 2.8 QTip, Ducati TT2
90 JDM RHD 300ZX TT - 572.1 RWHP | 590.0 RWTQ | 21 PSI | Pump gas
90 JDM RHD 300ZX TT - 572.1 RWHP | 590.0 RWTQ | 21 PSI | Pump gas
- Tunes67
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Who told you that you had valves hitting pistons? Did you see holes in your pistons or other scoring marks? Or did your "Mechanic" just tell you this? K series and B series engines are all Non-Interference.. the only way you could have valve and piston damage is if someone changed the dynamics of your engine.. i.e. domed pistons, shaved or decked head surfaces. Doing these kinds of things to an engine will decrease valve clearance and could turn a non-interference engine into an interference one. CheersIf this is true Then how did I have to buy a new KLZE motor 2 months after my last one because my timing belt snapped and my valves hit the pistons on the front bank? Isn't that a problem with an interferance motor? O man I am confused now.
Tunes67
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- Tunes67
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There is a weakness in the KLZE engines.. the valve keepers have been known to give up and drop valves when under high stress (High RPM's) If you were to drop a valve.. this could result in a snapped timing belt and valve and piston damage.. could explain what happened to your engine and you wouldnt be the first to have had that happen.
Tunes67
Tunes67
"So long.. and thanks for all the fish!" "Momma says VW Bugs are the devil" "This one time at band camp.. I stuck a flute in my Throttle Body"
"Screw you guys.. I am goin home"
I am the Cranky God of Mods!!! Tremble before my fury!! LOL
"Screw you guys.. I am goin home"
I am the Cranky God of Mods!!! Tremble before my fury!! LOL
- Tunes67
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Btw.. the fix for this weakness is to use valve keepers from the DE engines.. for some reason these are apparently beefier than the ZE ones. Cheers
Tunes67
Tunes67
"So long.. and thanks for all the fish!" "Momma says VW Bugs are the devil" "This one time at band camp.. I stuck a flute in my Throttle Body"
"Screw you guys.. I am goin home"
I am the Cranky God of Mods!!! Tremble before my fury!! LOL
"Screw you guys.. I am goin home"
I am the Cranky God of Mods!!! Tremble before my fury!! LOL